Check DPI
Check the embedded DPI/PPI, pixel dimensions and print size of JPG, PNG and WebP images directly in your browser.
Change Image DPI
Change the DPI/PPI metadata of an image without changing its pixel dimensions.
Your files stay on your device.
Files are processed locally in your browser and are not uploaded to our servers.
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or
JPG, PNG and WebP · Up to 50 MB
Your image
- Format
- File size
- Dimensions
- Reading…
Choose an image to see its current resolution.
Current resolution
Only the resolution metadata changes. The pixels stay exactly the same.
Changing DPI…
Result
How to change image DPI
- Choose a JPG, PNG or WebP image. The current resolution is shown.
- Pick 72, 96, 150, 300 or 600, or enter your own value from 1 to 1200.
- Click Change DPI. The new file is checked again before it is offered.
- Download the image. Your original stays untouched.
To only look at the current value, use Check Image DPI.
What changing DPI actually does
The tool changes only the resolution value stored in the file: the JFIF or EXIF entry of a JPG, the pHYs entry of a PNG, and the EXIF entry of a WebP. The compressed image data is copied byte for byte. The image is not re-encoded, so there is no quality loss and no colour change.
Does changing 72 DPI to 300 DPI improve quality?
No. An image with 3000 × 2000 pixels still has 3000 × 2000 pixels at 300 DPI. It just prints smaller: 10 × 6.67 inches instead of 41.67 × 27.78 inches at 72 DPI. Whether that is sharp enough depends on the printing method, the viewing distance and the device.
Pixel dimensions vs print size
The pixel dimensions describe how much detail an image has. The DPI value describes how large that detail is printed. Changing DPI changes the print size and leaves the pixels alone. Changing the pixel dimensions (resizing) changes the image itself.
Does this resize my image?
No. The pixel dimensions stay exactly the same, and the tool checks this before offering the file. Want more or fewer pixels? Use Resize Image. Want a smaller file? Use Compress Image.
Does changing DPI remove EXIF or GPS data?
No. Changing DPI does not remove other metadata: camera details, date, GPS location, XMP and IPTC stay in the file as they were. To remove them, use Remove Image Metadata.
Your images stay on your device
Everything happens in your browser. The image is not uploaded to any server.
Frequently asked questions
How do I change an image to 300 DPI?
Choose the image, select 300 and click Change DPI. The new file has the same pixels and a stored resolution of 300 DPI.
Does changing DPI add more pixels?
No. The number of pixels stays exactly the same. Only the stored resolution value changes, and with it the print size.
Can I change 72 DPI to 300 DPI without losing quality?
Yes, because the image is not re-encoded: the image data is copied unchanged. But the quality does not improve either. The image simply prints smaller.
Does changing DPI resize the image?
No. The pixel dimensions stay the same. To change them, use Resize Image.
What happens to the physical print size?
It changes in proportion: print size is pixels divided by DPI. Going from 72 to 300 DPI makes the print about four times smaller in each direction.
Does changing DPI remove metadata?
No. Camera details, date, GPS location and other metadata stay in the file. To remove them, use Remove Image Metadata.
Are my images uploaded?
No. The image is changed in your browser and never leaves your device.